Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * Maas Werner	2. Date of Event Requiring Statement (MM/DD/YYYY) 2/11/2013	3. Issuer Name and Ticker or Trading Symbol BRUKER CORP [BRKR]
(Last)        (First)        (Middle) BRUKER CORPORATION, 40 MANNING ROAD	4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                            _____ 10% Owner ___ X ___ Officer (give title below)          _____ Other (specify below) President, Bruker BioSpin Corp /
(Street) BILLERICA, MA 01821        (City)              (State)              (Zip)	5. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _ X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock option - right to purchase	(1)	5/7/2018	Common Stock	50000	$12.01	D
Stock option - right to purchase	(2)	3/9/2020	Common Stock	25000	$13.95	D
Stock option - right to purchase	(3)	8/19/2021	Common Stock	17500	$12.73	D

Explanation of Responses:
( 1)	Options to purchase 40,000 shares of common stock are currently vested and exercisable. Options to purchase 10,000 shares vest on May 7, 2013.
( 2)	Options to purchase 10,000 shares of common stock are currently vested and exercisable. Options to purchase 5,000 shares vest on each of March 9, 2013, March 9, 2014 and March 9, 2015.
( 3)	Options to purchase 3,500 shares of common stock are currently vested and exercisable. Options to purchase 3,5000 shares vest on each of August 19, 2013, August 19, 2014 and August 19, 2015 and August 19, 2016.

Remarks: Exhibit List:Exhibit 24 - Power of Attorney

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Maas Werner BRUKER CORPORATION 40 MANNING ROAD BILLERICA, MA 01821			President, Bruker BioSpin Corp

Signatures
/s/ Constance Andrews, Attorney-in-Fact		2/20/2013
** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.